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        Learn more by watching our Robus RHEMW-04 | Plug-In Microwave And 3 Step Dimming Sensor For HARBOUR Range | Black video.

        Robus | Harbour Express Plug-In Microwave and 3 Step Dimming Sensor 360 Degree | IP20 Black

        The Robus RHEMW-04 is a plug-in microwave sensor for the Robus Harbour Express range, which switches the fitting on detected movement and can hold it at a reduced standby level before switching off. The RHEMW-04 operates on 220-240V AC, detects across 360 degrees, and mounts to a maximum height of 5 metres with a detection zone up to 10 metres in diameter. It is Class II double insulated and rated IP20.

        A batten in a corridor or store room delivers full output whether or not anybody occupies the space. Switching it off entirely on a timer irritates occupants, who subsequently walk into darkness and grope for a switch. The RHEMW-04 resolves both difficulties with 3 step dimming. The fitting reduces to a 10 or 30 percent standby level rather than extinguishing, and a daylight threshold between 2 and 50 lux inhibits operation while daylight suffices.

        The sensor clips into the marked position on the Harbour Express gear tray and connects on quick-fix connectors. A fitting converts to sensor control in the time required to open the diffuser. DIP switch 9 selects between straight on/off operation and the 3 step dimming corridor function, and a configurable standby period determines how long the reduced level persists.

        Features

        • Plug-in installation — the RHEMW-04 clips into the marked sensor position on the Harbour Express gear tray and connects on quick-fix connectors.
        • Two selectable modes — DIP switch 9 selects between on/off switching and the 3 step dimming corridor function.
        • 10 or 30 percent standby — the standby dimming level sets at 10 or 30 percent of full output.
        • Standby period to indefinite — 0 seconds, 10 seconds, 15 minutes, or held indefinitely so the fitting never fully switches off.
        • 360 degree detection — Robus rates the RHEMW-04 at 360 degrees, across a detection zone up to 10 metres in diameter.
        • 5 metre maximum mounting — maximum mounting height is 5 metres; at a 3 metre ceiling the tested detection radius runs 3 to 4.5 metres.
        • Sensitivity 25 to 100 percent — the detection area reduces in steps to retract the pattern away from false triggers.
        • Hold time to 30 minutes — hold time runs from 5 seconds to 30 minutes, with the available steps depending on the mode selected.
        • 2 to 50 lux daylight — the daylight threshold sets between 2 and 50 lux, or disables so the sensor operates regardless of ambient light.
        • 400W LED load — Robus rates the RHEMW-04 for a maximum 400W LED load.
        • Class II, 0.5W standby — Class II double insulated, drawing 0.5 watts in standby, rated IP20 for indoor positions.
        • No metal shielding — Robus states the detected surface of the sensor cannot be shielded by metal objects.

        Where to use

        • Harbour Express corridors — the RHEMW-04 converts an existing Harbour Express batten to corridor dimming without rewiring.
        • Warehouse and workshop aisles — aisles hold at a low standby level and lift to full output as a picker enters.
        • Stairwells and escape routes — an indefinite standby period keeps a low level permanently rather than switching to darkness.
        • Store rooms and utility areas — short hold settings suit rooms entered briefly through the day.
        • Apartment common areas — lobbies and circulation run dimmed overnight and lift on movement.
        • Plant rooms and switchrooms — the 5 metre mounting range covers rooms with services at high level.
        • Energy compliance retrofits — adding occupancy and daylight control to fittings already installed.

        The RHEMW-04 is rated IP20 and suits indoor positions only, not exterior or damp locations. Robus states the detected surface of the sensor cannot be shielded by metal objects, so the mounting position must leave the sensor face clear. The sensor is rated between -20 and +40 degrees Celsius, so positions running hotter than that fall outside the range.

        (RHEMW-04)

        It is a plug-in microwave motion sensor designed for Robus HARBOUR EXPRESS fittings, enabling automatic lighting control with optional 3-step corridor dimming.

        It uses microwave motion detection with adjustable sensitivity from 25% to 100%.

        3-step dimming allows the light to remain at a reduced standby level such as 10% or 30% before switching off completely.

        Yes. Hold time, standby period, and daylight lux threshold from 2 to 50 lux can be configured.

        It is IP20 rated and designed for indoor installations only.

        Yes, Sparky Direct stocks Robus RHEMW-04 with fast dispatch and fast Australia-wide delivery.

        100-Day Fuss-Free Returns
        We want you to love what you buy—but if you change your mind, that’s okay too. That’s why Sparky Direct offers a 100-day money-back guarantee.

        • Items must be unused, with all parts, accessories, and original packaging.
        • We can’t accept returns if the product is damaged, incomplete, or not in resalable condition.
        • Proof of purchase is required.
        • Return shipping is the responsibility of the customer. 

        If your item isn’t in its original condition, please contact us before returning it—we might save you time and money.


        All products come with a manufacturer’s or supplier’s warranty

        • Warranty starts from the Invoice Date
        • Some suppliers offer in-home warranties and handle claims directly, so you won’t need to uninstall or return the product. Chat with us to check if your product qualifies.
        • Sparky Direct isn’t responsible for losses caused by product failure.
        • Warranties are void if products aren’t installed by a licensed electrician.

        Damaged or Faulty Goods
        If your order arrives damaged or is faulty, let us know within 24 hours.

        • Sparky Direct will pay for return shipping via an emailed return label.
        • If the fault is confirmed, we will send you a replacement item or provide a refund.

        Contact us via our chat to arrange the return.


        Exclusions
        We can’t accept returns for:

        • Items that have been installed, modified, or used
        • Clearance, End of life, Discontinued, or special order items (unless faulty)
        • All PPE Items
        • Goods returned without original packaging or proof of purchase

        How to Request a Return

        1. Contact our customer service team with your order number.
        2. Confirm it’s eligible under our return or warranty policy.
        3. Pack the item securely and return it using a trackable service.
        4. Once we receive and inspect it, we’ll process your refund or replacement.

        Warranty starts from Invoice Date

        Domestic Use: 5 Year
        Commercial Use: 5 Year
        Warranty Method: Return to Sparky Direct

        These specifications and characteristics outline physical, mechanical, electrical details.

        Brand Robus
        SKU RHEMW-04
        Model # RHEMW-04
        Barcode # 5391370093750
        Package Weight 0.063kg
        TYPE VALUE
        Type Sensor
        Brand Robus
        Colour Black
        Voltage (V) 220-240
        IP Rating IP20
        Detection Range 10m
        Detection Angle 360°
        Maximum Mounting Height 5m
        LED load max 400W

        Electrical and HVAC products sold by Sparky Direct are intended for installation by licensed and appropriately qualified professionals in accordance with applicable Australian Standards and regulatory requirements. Customers are responsible for ensuring that any product purchased, including any related or associated components, is compatible and suitable for their intended installation and application.

        Sparky Direct does not provide installation advice and does not assess product suitability for individual circumstances unless expressly confirmed in writing. Customers must confirm correct product selection, compatibility, compliance, and suitability with a licensed or appropriately qualified professional prior to purchase.

        Tools sold by Sparky Direct must be used safely and in accordance with the manufacturer’s instructions. Customers are responsible for ensuring they have the necessary knowledge and competence to operate any tool purchased. If you are unsure how to safely or correctly use a tool, do not use it and seek guidance from the manufacturer or a suitably qualified professional.

        Nothing in this clause limits or excludes any rights or guarantees available under the Australian Consumer Law.

        For website terms and conditions https://www.sparkydirect.com.au/terms-of-use

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